Which professional group may administer nitrous oxide after obtaining a permit?

• A. Dental assistants.
• B. Physicians.
• C. Dental hygienists.
• D. Nurses.

Answer: (C)

Nitrous oxide administration in dental settings is a controlled activity that requires specialized training and a state permit. In Louisiana, this authority is designated to dental hygienists who have completed the required education and obtained the permit, and they typically perform the procedure under the supervision of a licensed dentist. This setup ensures proper patient monitoring, gas mix adjustments, and emergency readiness.

Physicians and nurses practice in medical contexts and are not the target group for this dental-sedation authorization. Dental assistants generally do not have the permitting pathway or scope to administer nitrous oxide in this jurisdiction. Therefore, dental hygienists are the professionals who may administer nitrous oxide after obtaining the permit.